Diagnostic Procedures

1. Checking The Grounding Of Switches





Unplug the connector:
- H6-4

When done:
Go to step 2

2. Checking The Grounding Of Switches

Part 1 Of 2:

Part 2 Of 2:

- Connect test lamp 86 11 857 to B+ and pin 2 of the female connector.





- The test lamp should light.

Checking the wiring harness.
Jiggle the leads and in-line connectors at several places and indifferent directions to reveal intermittent breaks and short circuits in the wiring harness. observe the multimeter, test lamp or diagnostic tool while doing this.

Is the function correct?

NO
Go To Step 3

YES
Go To Step 4

3. Rectifying The Lead





Repair the lead between H6-4 pin 2 and the grounding point G41S.

When repair is complete:
Go to step 15

4. Checking The Fault Symptom





What function is faulty?

SPORT
Go To Step 5

WINTER
Go To Step 10

5. Checking Control Module Input With Open Circuit





- Turn the ignition switch to the ON position.





- Contact TCM.

Test value Sport Switch (TCM)





The reading should be: OFF

Checking the wiring harness.
Jiggle the leads and in-line connectors at several places and indifferent directions to reveal intermittent breaks and short circuits in the wiring harness. Observe the multimeter, test lamp or diagnostic tool while doing this.

Is the function correct?

NO
Go To Step 6

YES
Go To Step 7

6. Rectifying The Lead





Repair the lead between H6-4 pin 4 and control module pin 7.

When repair is complete:
Go to step 15

7. Checking The Lead From Switch To Control Module





Connect a jumper lead between pin 2 and pin 4 of the female connector.

Read value: Sport Switch

- Jiggle the leads and in-line connectors at several places and indifferent directions to reveal intermittent breaks and short circuits in the wiring harness. Observe the multimeter, test lamp or diagnostic tool while doing this.

The reading should be: ON

Is the function correct?

NO
Go To Step 8

YES
Go To Step 9

8. Rectifying The Lead





Repair the lead between H6-4 pin 4 and control module pin 7.

When repair is complete:
Go to step 15

9. Changing Components





- Change - Switch, SPORT.

When repair is complete:
Go to step 15

10. Checking Control Module Input With Open Circuit





- Turn the ignition switch to the ON position.





- Contact TCM.

Test value WINTER Switch (TCM)





The reading should be: OFF

Checking the wiring harness.
Jiggle the leads and in-line connectors at several places and indifferent directions to reveal intermittent breaks and short circuits in the wiring harness. Observe the multimeter, test lamp or diagnostic tool while doing this.

Is the function correct?

NO
Go To Step 11

YES
Go To Step 12

11. Rectifying The Lead





Repair the lead between H6-4 pin 1 and control module pin 22.

When repair is complete:
Go to step 15

12. Checking The Control Module Input With A Strapped Circuit

Part 1 Of 2:

Part 2 Of 2:

- Connect a jumper lead between pins 1 and 2 of the female connector.

Test value Winter Switch (TCM)

The reading should be, ON

Checking the wiring harness.
Jiggle the leads and in-line connectors at several places and in different directions to reveal intermittent breaks and short circuits in the wiring harness. Observe the multimeter, test lamp or diagnostic tool while doing this.

Is the function correct?

NO
Go To Step 13

YES
Go To Step 14

13. Rectifying The Lead





Repair the lead between H6-4 pin 1 and control module pin 22.

When repair is complete:
Go to step 15

14. Changing Components





- Change - WINTER Switch.

When repair is complete:
Go to step 15

15. Final Check





- Clear the diagnostic trouble codes in all systems.





- Carry out a functionality test.

Is the function correct?

NO
Go To Step 16

YES
Go To Step 17

16. Final Check
See Before changing a control module, refer to General Fault Diagnosis.
- Diagnosis for this fault code is complete.

17. Final Check
The steps taken to correct the fault were correct.
- Diagnosis is complete.